Molding-machine.



No. 778,329. PATENTED DEC. 27, 1904.

a. PIPHBR.

MOLDING MACHINE.-

' APPLICATION FILED MAR. 5, 1901.

2 SHEETS-SHEET 1.

' UNITED STATES Patented December 27, 1904.

PATENT OFFICE.

EDWARD PIPHER, OF DETROIT, MICHIGAN, ASSIGNOR OF TWELVE T'WENTY-FIFTHS TO HIRAM T. BUSH, OF DETROIT, MICHIGAN.

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent N0. 778,329, dated December 27, 1904:.

A lication fil d March 5 1901. Serial No. 49,845.

To all whom, it may concern.-

Be it known that I, EDWARD PIPHER, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have invented certain new and useful Improvements in Molding-Machines, of which the following is a specification, reference being had therein to the accompanying drawmgs.

The invention relates to molding-machines; and it is the object of the invention to pro- Vide means for packing the sand about the pattern without the necessity of hand-ramming.

It is a further object to obtain a machine by means of which the work may be done more expeditiously without requiring the attention of a skilled workman.

The invention consists in the peculiar construction and arrangement of a power press or ram; further, in the construction and arrangernent of a movable flask-supporting table; further, inthe construction'of a multifaced head for the press, together with means Y and, further, in the peculiar construction, ar-

rangement, and combination of parts, as hereinafter described and claimed.

In the drawings, Figure l is a perspective view of my machine. Fig. 2 is a sectional side elevation. Figs. 3 and 4 are sections through-a portion of Fig. 2, showing the operation of the machine. Fig. 5 is an elevation of the opposite side of the machine from that shown in Fig. 2. Fig. 6 is a sectional front elevation of the parts shown in Fig. 5.

My machine comprises mechanism for performing the following operations? first, the filling of the proper quantity of loose sand into the mold-flask around the pattern therein;' second,.the peening of the sandc'. a, the pressing of those portions around the margin of the flask and between the different patterns, so as to packthe sand very hard; third, the pressing of the sand above the patterns, so as to pack'it toa uniform degree of hardness, which is less than that of the peened portions,

cross-bars a for supporting the work.

of, first, a sand spout or hopper preferably having means for discharging a measured quantity of sand therefrom; second, a bench or bed for supportlng the flask; thlrd, a vertically-movable plunger above said bench orv bed; fourth, a forming or pressing head carried by said plunger. The apparatus is also preferably provided with a movable table or carrier for conveying the mold-flask from a position 'where it receives the loose sand to a position supported upon the bench or bed beneath the plunger and'adapted to be operated upon by the forming-head; These parts are preferably arranged as shown in the drawings, in which' A is a bench or bed preferably formed, as shown, of an open framework having the 5gp lrectly above this bed is arranged the plunger mechanism, comprising the cylinder B, the piston O therein, and a depending piston-rod D. The cylinder B is mounted in such a manner as to leave a space in front and at the sides of the bed A unobstructed. This may be accomplished, as shown, by securing the cylinder directly to the side wall E of the building, as by a projecting framework E of suitable construction, the bench A being also arranged adjacent to the side wall.

F is a sand-hopper preferably arranged infront of the cylinder B and having the depending discharge-spout Gr. This spout is preferably provided with suitable means for discharging a measured quantity of sand therefrom, which is shown as comprising the gate-valves b and 0, connected by a lever (Z for alternately moving them across the spout.

His a swinging table or carrier secured to the bench A by the parallel links 6 and j, which are so arranged as to carry the table from the position shown in full lines in Fig. 2 to the position in dotted lines therein. In the full-line position the table H is arranged directly beneath the spout G and is supported by standards 9, secured at opposite sides of the table. hen swung up into the position in dotted lines, the table will rest upon the cross-bars a of the bench in a position directly beneath the cylinder B.

The piston-rod D is provided at its lower end with a rotary multifaced head I. As shown, this head is of rectangular form, having the separate faces h c', &.c., and is pivotally secured in a bifurcation D of the pistonrod. The latter is guided in its travel by means of arms projecting rearwardly and having antifriction-rolls q at their ends engaging with vertical ways 1, secured to the wall.

m is a cam pivotally secured to a stationary part of the framework and adapted in the up ward movement of the piston and head I to engage with the bolt 7' and retract it from the recess Z. This arrangement is effected'by a projecting finger on the bolt 1', in the path of which the cam m is arranged.

a is a slidable bolt secured to a hand-lever p, fulcrumed to a projecting portion E of the frame E.

w represents a series of lugs or flanges upon the head I, with which the bolt a is adapted to engage in one position of the lever and when the head is moving upward, the arrangement being such that the head will be rotated through one-quarter of a revolution by one of the flanges so engaging with the bolt 41.

The cylinder B is connected with any suitable motive agent, (not shown,) such as compressed air or steam, which is admitted thereto through pipes s a, controlled by the valve t. This valve is preferably arranged with its operating handle or lever J in a convenient position to be reached by the operator when standing in front of the machine, as shown in Fig. 2. Two faces 7i and 2 of the head I are of a configuration to respectively peen and press the sand in the mold-flask. Thus the face h is provided with a marginal depending flange u for firmly packing the sand at the margin of the flask. The face i: has secured thereto a suitable form, such as c, which in its general lines is a counterpart of the pattern to be used.

The parts being constructed and arranged as above described, the operation of the machine is as follows: The hopper F is filled with sand properly prepared for use and preferably automatically conveyed to said hopper by mechanism. (Not shown.) The operator taking his position in front of the machine first places one section of the empty mold-flask J upon the table H. He then places the pattern, such. as K, therein, or where necessary the pattern K in its follower-board L is placed first on the table and the flask-section above the same. He next operates the handle (Z, controlling the valves 6 and 0, which, as will be readily understood, discharges a measured quantity of sand (the amount between the two valves) into the flask. The table H is then swung into the position shown in dotted lines, Fig. 2, where it will rest upon the cross-bar w of the bed and will be directly in line with the head I. The latter being in the position where its peeningface It is turned downward, the operator seizes the handle J and operates the valve 6 to admit the motive agent into the upper end of the cylinder B, so as to press the piston and its depending piston-rod downward. This will cause the peening-face it to press upon the loose sand in and above the flask, packing the whole of said sand to some degree, but more particularly packing the marginal portions. The operator then reverses the position of the lever J, which admits the motive agent beneath the piston and raises the same, together with the rod 1) and head I. In this upward movement the holtj engages with the cam 111, which disengages it from the recess 7, unlocking the head. The bolt is then engaged with one of the flanges 10 and rotates the head through a (punter-revolution, which will turn the peening-face ll npward and bring the face 1 down into position for operation. The lever J is then again reversed, causing the head I to again descend and press against the sand with the formingface 4;. As the latter conforms in a gei'ieral way to the lines of the pattern, it is evident that agnifoi n pressure will be brought upon all portions of sand in contact with the pattern, so as to give the requisite hardness. The head I is then raised once more and the table H swung downward into its outer position, when the ope 'ation will be repeated with the second section of the flask. \Vhen this is accomplished, the mold is removed, preferably at one side of the bench or bed, and placed upon the vibratory table for rapping and removing the patterns, which, however, forms no part of the present invention and is not illustrated in the drawings.

From the above description of the construction and operation it will be understood that the work of forming the molds may be carried on rapidly by a single workman and without the exercise of any great degree of skill. One of the advantages of the construction is that the space around the bench and table is left unobstructed, as both sand-hopper and press cylinder are supported from above. Thus the workman may carry on the operation more expeditiously than where limited in his movements by obstructions, such as the framework of a machine.

\Vhat I claim as my invention is 1. A molding-machine comprising a bed or table, a cylinder supported above the same, a piston in said cylinder having a depending piston-rod, a multifaced head rotatively secured to the lower end of said piston-rod, and means for automatically turning said head in movement, and a multifaced head actuated by said press-cylinder.

3. A molding-machine comprising a bed, a

press-cylinder mounted above the same leaving an unobstructedspace to the front and sides and a swinging table consisting of a top, standards at the 'sidesthereof and parallel links connecting said top to said bed, said table being adapted to be swung from a position in front of said bed where it is supported on said standards, to a position supported'upon said bed beneath said press.

4. A molding-machine comprising a bed, a support therefor, a cylinder above the same, a piston in said cylinder having a depending piston-rod, a multifaced-head at the lower end of the rod, and an oscillatory work-support pivotally connected to the bed-support whereby the work-support may swing from a position upon said bed to a position at one. side thereof and be maintained in a horizontal plane during said movement.

5. In a molding-machine, a bed-or table, a reciprocating piston-rod abovethe bed, a rotatable head journaled in the lower end of the piston-rod, means for locking the head against rotation during its operation and. automatic means for unlocking thehead as it is retracted.

6. In a molding-machine, a bed or table, a reciprocating piston-rod above the bed, a rotatable head journaled in the lower end of the piston-rod, means for locking the head against rotation during its operation, automatic unlocking means for the head as it is retracted, and means for turning the head while it is unlocked.

7 A molding-machine comprising a bed, a cylinder supported vabove the same, a piston in said cylinder having a depending bifurcated piston-rod, and a multifaced head rotatably secured at the lower end of said rod intermediate the furcations thereof, and means for automatically moving said head to present different faces.

8. A molding-machine comprising a bed, a cylinder supported above the same, a piston in said cylinder having a depending bifurcated piston-rod, a multifaced head rotatably secured at the lower end of said rod intermediate the furcations thereof, means for automatically moving said head to present difierent faces to the bed, and an antifriction-guide for the rod.

9. A molding-machine comprising a bed,'a cylinder supported above the same, a piston in said cylinder having a depending bifurcated piston-rod, a multifaced head rotatably secured at the lower end ofsaid rod intermediate the furcations thereof, and means for auan oscillatory support therefor, comprising links pivoted .to the respective sides thereof whereby the tablemay be swung from a position in front of said bed to a position supported thereupon beneath the press, and be maintained in a horizontal plane during said movement.

' In testimony whereof IafiiX my signature in presence of two witnesses.

EDWARD PIPHER.

Witnesses:

M. B. ODoeHnRTY, H. 0. SMITH. 

